#region Copyright & License

//
// Copyright 2001-2005 The Apache Software Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

#endregion

using System;

namespace log4net.Util.TypeConverters {
  /// <summary>
  /// Type converter for Boolean.
  /// </summary>
  /// <remarks>
  /// <para>
  /// Supports conversion from string to <c>bool</c> type.
  /// </para>
  /// </remarks>
  /// <seealso cref="ConverterRegistry"/>
  /// <seealso cref="IConvertFrom"/>
  /// <seealso cref="IConvertTo"/>
  /// <author>Nicko Cadell</author>
  /// <author>Gert Driesen</author>
  class BooleanConverter : IConvertFrom {
    #region Implementation of IConvertFrom

    /// <summary>
    /// Can the source type be converted to the type supported by this object
    /// </summary>
    /// <param name="sourceType">the type to convert</param>
    /// <returns>true if the conversion is possible</returns>
    /// <remarks>
    /// <para>
    /// Returns <c>true</c> if the <paramref name="sourceType"/> is
    /// the <see cref="string"/> type.
    /// </para>
    /// </remarks>
    public bool CanConvertFrom(Type sourceType) {
      return (sourceType == typeof (string));
    }

    /// <summary>
    /// Convert the source object to the type supported by this object
    /// </summary>
    /// <param name="source">the object to convert</param>
    /// <returns>the converted object</returns>
    /// <remarks>
    /// <para>
    /// Uses the <see cref="Boolean.Parse"/> method to convert the
    /// <see cref="String"/> argument to a <see cref="Boolean"/>.
    /// </para>
    /// </remarks>
    /// <exception cref="ConversionNotSupportedException">
    /// The <paramref name="source"/> object cannot be converted to the
    /// target type. To check for this condition use the <see cref="CanConvertFrom"/>
    /// method.
    /// </exception>
    public object ConvertFrom(object source) {
      var str = source as string;
      if (str != null)
        return bool.Parse(str);
      throw ConversionNotSupportedException.Create(typeof (bool), source);
    }

    #endregion
  }
}